Suction-fastening device



` Patented'Dec. 13, 1927.

UNITED ysTnTEs PATENT OFFICE.

SUCTION -FAST'ENIN G DEVICE.

Application filed September 5, 1924. Serial No. 736,035.

This invention relates to a suction fastening device, and has for itsobject to provide a fastening device of the character, men tionedcapable of being secured to certain articles of manufacture, and therebyproviding a means for attaching said articles to the smooth flatsurfaces of containers, walls, Windows and the like.

It is still further an object of the invention to provide a fasteningdevice with a moisture retaining groove, normally of such a form thatwater may be held therein, but which when the device is compressedagainst 'a surface to which it is to be attached, will spread, allowingthe moisture therein to pass therefrom and flow over the adjacentportions of the suction device and surface to which the latter is to beattached, thereby increasing the holding power of the device.

The invention consists in a suction fastening device as set forth in thefollowing speciication and particularly as pointed out in the claimsthereof.

Referring` to the drawings:

Figure 1 represents a sectional elevation of a discharge closure for 1iuid containers, a suction fastening device` em dying my invention beingillustrated in connection there# with.

Fig. 2 is a view similar to Fig. 1 illustrating a discharge closureattached to a liquid container through the medium of a suctionfasteningdevice of my invention.

Fig. 3 represents a central longitudinal section through a slightlymodified embodiment of my invention.

Fig. 4 represents a central longitudinal section through another form ofsuction fastenin g device embodying my invention.

Fig. 5 is a sectional View illustrating the device of Fig. 4 attached tothe surface of a piece of glass.

'Like numerals refer to like parts throughout the several views of thedrawings.

In the drawings, referring particularly to Figs. 1 and 2 A represents aportion of a container for liquids in which asmall aperture a has beenprovided, and B represents a discharge closure for the container A.

The discharge closure B forms no part of this invention, but has beenmade the subjectmatter of a separate invention, for

which I have filed an application on June 7,

1921. Sci'. No. 718,520 to which reference may be had for a completedescription.

lretly described, however, the discharge lvention reside.

closure embodies therein a main body portion 5 from which an extension 6projects through the aperture a into the container A, a nozzle 7, afiexible bulb 8 andan inlet air valve 9.

Secured to the under side of the body member 5 is a flexible suctionmember 10 which is utilized for the purpose of securing the dischargeclosure B to the container A, and it is in the structure of this suctionmember that the novel features 0f this in- The suction member 10 ispreferably constructed of rubber and has an annular groove 11 formedtherein and adapted to receive a flange 12 formed upon the body member5, and said flange 12 secures the suction member 10 to said body member5 with a top edge 13 of said suction member abutting closely against theunder surface of said bodymember.

The suction member 1() terminates at its lower end in an outwardlyflaring, tapering lip portion 14 and an inwardly flaring tapering lipportion 15 between which an annular suction recess 16 is located. Thesuction recess 16 preferably tapers inwardly and terminates in anannular moisture retaining groove 17, the latter communicating with therecess 16 through a narrow opening 18 which is normally contracted andpreferably of considerably less width than the width of the groove 17.The groove 17, in effect, forms a pocket capable of retaining a certainamount of moisture, preferably water, even though the device is locatedin a vertical position until such time as it is desired to attach theclosure to the container, at which time the spreading of the lips 14 andl5 as illustrated in Fig., Q'allows the moisture within the groove 17 toflow outwardly therefrom and over the surface of the recess 16 and theadjacent surface of the device to which the suction member is attached.

A passage 19 extends through the center of the suction member 10 and itis through this passage that the extension 6 of the discharge closureprojects in entering thev container A.

In Fig. 3 I have illustrated a slightly modified embodiment of myinvention in which the opening 18 connecting the suction recess 16 withthe annular groove 17 is normally closed so that when it is desired touse the device, in moistening the surface of the recess 16 the lips 14and 15 are spread. allowing water to enter the groove 17, after whirhaid lip` are released and the water within the groove IT is heldtightly` therein until the devil-e is toreed against the surt'aee ol`the artiele to which it i attaehed, at which time the water within laidgroove 1T will tlow therefrom as previously nientioned in connectionwith the. device of Figs. 1 and t2.

[n Figa. t and E l have illustrated still another embodiment ot' myinvention in whieh 2() represente a well known form of flexible suctioncup, havingr a stud ill moulded therein and l'n'ojeetini;r therefrom andutilized for the purpose of attaching articles ol variou` 'torinathereto, and aaid suction rap provided with a shallow recess 22, thehaurt'iu-e ot'v whit-h is brought. in contact with a pane otE lglass 25,as illustrated in Fig. 1. In this embodiment ot |n invention l providean annular groove il whirh eonununirates with the, t'etess l2 through anopening .2-1, the latter pre t'erably heine* narrower in width than thewidth of the groove In this en'ibodiment of my invention the action ol'the suction member 2t) and groove :23 thereof' is exactly the same asthat oi' the preferred embodiment of my invention previously mentioned,as when said suction member i@ foreed tightly against the surl'aee ofthe glass 25. it eauses'tlie opening 2i to spread, and allows the waterlocated therein to flow tlieret'rom and over the Surfaee of the recess:32 and adjacent portion ol' the glass 25, thereby increasing theholding power of the. suction member.

l claim:

1. A mfastening deviee of the eharaeter described comprising an annularsuction member provided with cooperating lip portienel forming anannular suction recess, and f EMIL O. LUNDBLAD.

